"use strict";
//你好,世界
// console.log('Hello World');
function greet(person, date) {
    console.log(`Hello ${person},today is ${date}`);
}
greet('小千', new Date());
// let msg = "hello there!";
// msg = 'hello world';
// msg = 100
// let surname: string = undefined;
// let age: number = null;
